ModifyPolarDbReadWeight - PolarDB - Alibaba Cloud Documentation Center

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

drds:ModifyPolarDbReadWeight

none

*All Resource

*

None

Request parameters

Parameter	Type	Required	Description	Example
DrdsInstanceId	string	Yes	The instance ID of the DRDS instance.	drds************
DbName	string	Yes	The name of the database.	test
DbNodeIds	string	Yes	The list of nodes in the target PolarDB cluster. Nodes from different clusters are separated by commas (,), and nodes within the same cluster are separated by colons (:).	pi-**************,pi-************:pi-**************
DbInstanceId	string	Yes	The ID of the PolarDB cluster.	pc-****************
Weights	string	Yes	The weights corresponding to PolarDB groups. Separate multiple weights with commas (,).	14,86

Response elements

Element	Type	Description	Example
	object
Success	boolean	The result of the request.	true
RequestId	string	The request ID.	B12FC174-D5CE-4A6E-83C1-0F8F86******

Examples

Success response

JSON format

{
  "Success": true,
  "RequestId": "B12FC174-D5CE-4A6E-83C1-0F8F86******"
}

Error codes

HTTP status code	Error code	Error message
400	InvalidParameter.InvalidDbName	The dbName does not exist in this drds instance
400	InvalidParameter.ReadWeighAndRdsNotMapping	The parameter read weight and rds instance not mapping
400	InvalidParameter.InvalidReadWeight	The parameter read weight is invalid
500	InternalError	The request processing has failed due to some unknown error.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.